EXPOSURES › CVE-2026-68979
CVE-2026-68979
CRITICALApache NiFi 1.10.0-2.10.0 lacks authorization checks on Parameter Context updates, allowing authenticated users to alter executable parameter values and trigger code execution during component validation.
An authenticated user with Parameter Context write access but no component-level authorization can modify parameter values containing executable scripting content, causing code execution during automatic component validation. This affects deployments using component-level authorization policies and requires upgrading to Apache NiFi 2.11.0 to align authorization checks with other methods.
Shame score — Missing authorization checks on a REST API method that directly impacts component validation and allows code execution in deployments using component-level authorization policies.
▸ RECOMMENDED ACTION Remote code execution — patch the affected products on priority.
Apache NiFI 1.10.0 through 2.10.0 provide a Parameter Context update REST API method that does not enforce authorization checking on components referencing Parameter values. Updating a Parameter Context can change parameter values that affect referencing components, but framework authorization was limited to read and write privileges on the Parameter Context itself. As a result of the missing authorization, an authenticated user authorized to modify a Parameter Context, but not authorized on referencing components, could alter Parameter values affecting those components. In deployments where a Parameter value contains executable scripting content, updating a Parameter can result in code execution during automatic component validation, without starting the referencing component. The impact was limited to stopped components by existing verification checks, and the issue applies only to deployments that use component-level authorization policies. Upgrading to Apache NiFi 2.11.0 is the recommended mitigation, which aligns the Parameter Context update method authorization with other methods, adding authorization checking on affected components.